Dispenser container

ABSTRACT

The invention relates to a dispenser container consisting of an outer container and an inner container for receiving a fluid, wherein the outer container and the inner container are formed from blow-moulded plastics, which do not form an integral connection with one another, and wherein a first plastic from which the inner container is formed has a higher elasticity than a second plastic from which the outer container is formed, such that the inner container is deformable, and wherein the outer container has at least one pressure compensation opening for pressure compensation in the region between the outer container and the inner container, wherein the inner container has a first outlet region and the outer container has a second outlet region, wherein the first outlet region can be shifted relative to the second outlet region in an outlet direction.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a U.S. National Stage Application filed under 35U.S.C. § 371 of International Application No. PCT/EP2018/056090, filedMar. 12, 2018, which claims the benefit of German Application No. 102017 121702.9, filed Sep. 19, 2017. Both of these applications arehereby incorporated by reference in their entireties.

The invention relates to a dispenser container consisting of an outercontainer and an inner container for receiving a fluid, wherein theouter container and the inner container are formed from blow-mouldedplastics, which do not form an integral connection with one another, anda first plastic from which the inner container is formed has a higherelasticity than a second plastic from which the outer container isformed, such that the inner container is deformable, and wherein theouter container has at least one pressure compensation opening forpressure compensation in the region between the outer container and theinner container.

Dispenser containers of this type are known in the art, for example fromDE 10 2014 113 535, wherein in this dispenser container a negativepressure is generated by withdrawing fluid from the inner container andis compensated through a pressure compensation opening in the outercontainer, and wherein the inner container is deformed in the baseregion or the central region, it being possible for dirt particles andharmful particles to penetrate into the dispenser container through thepressure compensation opening in the base region, potentially damagingthe dispenser container.

Therefore, the object of the present invention is to provide analternative ventilation design for a dispenser container and to overcomethe drawbacks of the prior art.

This object is achieved in accordance with the features of claim 1.

An essential point of the invention is to provide a dispenser containerconsisting of an outer container and an inner container for receiving afluid, wherein the outer container and the inner container are formedfrom blow-moulded plastics, which do not form an integral connectionwith one another, and a first plastic from which the inner container isformed has a higher elasticity than a second plastic from which theouter container is formed, such that the inner container is deformable,and wherein the outer container has at least one pressure compensationopening for pressure compensation in the region between the outercontainer and the inner container, wherein the inner container has afirst outlet region and the outer container has a second outlet region,the first outlet region being shiftable relative to the second outletregion in an outlet direction.

Alternatively, the concept of the outlet direction can also beunderstood as a longitudinal direction. Advantageously, the dispensercontainer, and in particular each of the outer container and the innercontainer, comprises a base region and a central region, the base regionbeing connected to the central region and the central region beingconnected to the outlet region in each case.

According to the invention, the first outlet region is shiftablerelative to the second outlet region in the outlet direction. This meansthat there are two states, a shifted state and an unshifted state, theinner container being undeformed in the unshifted state and the innercontainer being deformed in the shifted state.

A shift may for example be brought about by an external action of forceon the first outlet region, the first outlet region being shiftedaccordingly by the shift movement and the inner container thus beingdeformed.

The outlet region should be understood in particular as the region onwhich for example a pump device for withdrawing a fluid from the innercontainer may be arranged.

In a preferred embodiment, the first outlet region extends further inthe outlet direction than the second outlet region, at least in part.

This means that there are portions of the first outlet region whichextend further in the outlet direction than any region of the secondoutlet region. In particular, it is advantageous if the first outletregion as a whole extends further than the second outlet region.

In particular, it is conceivable that a first end of the first outletregion is arranged further away from the dispenser container than acorresponding first end of the second outlet region.

In a further preferred embodiment, the inner container has, on an outerface, at least one complementary projection for sealing the pressurecompensation opening, said projection projecting into the pressurecompensation opening and being non-positively connected to the pressurecompensation opening before a shift of the first outlet region relativeto the second outlet region, and the first projection being releasedfrom the pressure compensation opening after a shift of the first outletregion.

This means that when the first outlet region is shifted with respect tothe second outlet region, in other words is in the shifted state, thepressure compensation opening is no longer sealed and pressurecompensation in the region between the inner container and the outercontainer is thus made possible. Pressure compensation is thereforealready possible before fluid is actually withdrawn from the innercontainer. In the prior art, ventilation or pressure compensation ispossible when a fluid is withdrawn from the inner container.

If a corresponding pump device is mounted or fitted, pressurecompensation is therefore provided even before the pump device is firstused.

In a further preferred embodiment, the pressure compensation opening isarranged on the second outlet region.

In particular, it is also conceivable for the pressure compensationopening to be arranged at the transition between the outlet region andthe central region.

In a further preferred embodiment, the first outlet region has a secondprojection, which extends substantially perpendicular to the outletdirection and, in the outlet direction, is at a first spacing from thesecond outlet region before the shift and at a second spacing from thesecond outlet region after the shift, the second spacing being less thanthe first spacing.

Preferably, the first spacing is in a range of 1-10 mm.

Also preferably, the second spacing is at most 0.5 mm, more preferablyat most 0.1 mm and particularly preferably 0 mm.

As a result, a better sealing effect can be achieved between the innercontainer and the outer container in the outlet region, since there issome lack of tightness as a result of the shiftability of the firstoutlet region with respect to the second outlet region.

In a further preferred embodiment, the second outlet region has a thirdprojection, which extends substantially perpendicular to the outletdirection. By means of the third projection, it is possible inparticular to mount a pump device on the dispenser container. For thispurpose, the third projection serves as part of a holding device forholding the pump device with respect to the dispenser container.

The invention is further directed to a pump device for fitting on adispenser container, wherein the pump device is formed in such a waythat the first outlet region is shifted relative to the second outletregion while the pump device is being fitted on the dispenser container.

Particularly preferably, after the pump device is fitted on thedispenser container, the first outlet region is in the shifted state andis held in this shifted state.

In a preferred embodiment, a holding device of the pump device isprovided with a fourth projection, which, after the fitting, interactswith the third projection, in particular being connected by means of atleast one selected from the group of snap-on, click, crimp and screwconnection.

Further, a device is provided for manufacturing a dispenser container,consisting of an outer container and an inner container for receiving afluid, using a blow-moulding method for injection-moulding a preform andfor stretch-blowing the preform within the same device, the devicecomprising:

-   -   a. a multi-component injection-moulding means for injecting on        the preform which consists of at least two layers, the plastic        of the first layer not forming an integral connection with the        plastic of the second layer and the plastic of the first layer        having a higher elasticity than the plastic of the second layer;    -   b. an injection blow-moulding core, to which the layers which        form the preform are applied;    -   c. a first cavity for forming the first layer;    -   d. a second cavity for forming a second layer, into which a        slider core can be introduced;    -   e. a slider core comprising at least one slider projection,        which projects into the second cavity, the at least one slider        projection, located in the second cavity, of the slider core        recessing at least one region in the second layer, which region        forms at least one pressure compensation opening in the outer        container;    -   f. a stretch-blowing means for stretch-blowing the preform,        which is heated by an injection-moulding process and is at a        working temperature required for the stretch-blowing, to form        the dispenser container,        wherein the first cavity and the second cavity are formed in        such a way that after the stretch-blowing it is possible to        shift the first outlet region relative to the second outlet        region.

In a preferred embodiment, the first cavity comprises an enlargementregion, which is provided for and suitable for forming the firstprojection, the slider core projecting into the second cavity at theenlargement region, being in contact with said region, and beingprovided for and suitable for forming the pressure compensation opening.

A method for assembling a dispenser container with a pump device isfurther provided, comprising the method steps of:

-   -   a. providing the dispenser container and the pump device;    -   b. arranging and contacting the pump device on the dispenser        container;    -   c. exerting a force on the pump device along the outlet        direction and shifting the first outlet region relative to the        second outlet region;    -   d. connecting the pump device and the dispenser container.

It is further advantageous if the outer container and the innercontainer consist of thermoplastics or elastomers.

Further advantageous embodiments are apparent from the dependent claims.

Further aims, advantages and expediencies of the present invention canbe derived from the following description in connection with thedrawings, in which:

FIG. 1 is a perspective view of a dispenser container;

FIG. 2A is a cross section of a dispenser container in accordance with apreferred embodiment;

FIG. 2B is a detail of FIG. 2A;

FIG. 3A is a cross section of a dispenser container in the unshiftedstate;

FIG. 3B is a detail of FIG. 3A;

FIG. 4A is a cross section of a dispenser container in the shiftedstate;

FIG. 4B is a detail of FIG. 4A;

FIG. 5A is a cross section of a dispenser container with pump device inthe unshifted state;

FIG. 5B is a cross section of a dispenser container with pump device inthe shifted state;

FIG. 6 shows the preform in the first cavity;

FIG. 7 shows the preform in the second cavity with slider core;

FIG. 8 shows a device for manufacturing the dispenser container.

FIG. 1 is a perspective view of a dispenser container 1 comprising anouter container 2 and an inner container 3, in particular the outercontainer 2 being discernible in FIG. 1. Further, the outer container 2and the inner container 3 each comprise a central region 17 and a baseregion 18, which are described in greater detail in the following.

Further, a first outlet region 6 of the inner container 3 and a secondoutlet region 7 of the outer container 2 are discernible, the firstoutlet region 6 being arranged within the second outlet region 7 atleast in part as seen in a direction perpendicular to an outletdirection 8.

Moreover, a pressure compensation opening 4 is likewise discernible, andis arranged on the second outlet region 7, the pressure compensationopening 4 preferably being arranged in a first transition region 19 fromthe second outlet region 7 to the central region 17 of the outercontainer 2.

FIG. 2A is a sectional drawing of the dispenser container 1 inaccordance with a preferred embodiment, FIG. 2B being a detail of FIG.2A.

As can be seen, the inner container 3 has an outer face 21 and an innerface 22, the outer face 21 of the inner container 3 being in contact atleast in part with an inner face 24 of the outer container 2, and theinner face 24 being in contact with a fluid. Further, the outercontainer 2 has an outer face 23, which is in contact with theenvironment. Between the inner container 3 and the outer container 2, aregion 25 is arranged, which is not yet shown here. This region 25corresponds to a volume which arises between the outer container 2 andthe inner container 3 when fluid is withdrawn from the inner container3, the inner container 3 deforms as a result, in particular contractingor shrinking, and the region 25 arises as a result. The region 25 isthus in contact with the pressure compensation opening 4.

As stated previously, the outer container 2 has the pressurecompensation opening 4, the inner container 3 having a first projection9 which, in the unshifted state of the first outlet region 6, isconnected to and seals the pressure compensation opening 4, the firstprojection 9 being formed complementary to the pressure compensationopening 4.

FIG. 2B is a detail showing an enlargement of the outlet region of thedispenser container 1, comprising the first outlet region 6 and thesecond outlet region 7.

The first outlet region 6 further has a second projection 12, whichextends substantially perpendicular to the outlet direction 8. Thesecond outlet region 7, by contrast, comprises a third projection 13,which is arranged below the second projection 12 in the outlet direction8.

Particularly preferably, the pressure compensation opening 4 is formedfrustum-shaped, the top face of the pressure compensation opening 4being arranged on the outer face 23 of the outer container 2 and thebase face of the pressure compensation opening 4 being arranged on theinner face 24 of the outer container 2. In this context, it should benoted that the top face and the base face are imaginary, since they aresupposed to represent an opening.

In this context, in the region of the outlet region 28, which comprisesthe first outlet region 6 and the second outlet region 7, of thedispenser container 1, a first thickness 26 of the inner container 3 anda second thickness of the outer container 2 may be substantiallyconstant. Also advantageously, it is conceivable for the first thickness26 and the second thickness 27 of the corresponding outlet regions 6, 7to be substantially equal. In this context, the thickness is to bemeasured perpendicular to the outlet direction 8 in each case, anyprojections not being taken into account in this context.

The thicknesses in the central region 17 and the thicknesses in the baseregion 18 are preferably likewise constant, the third thickness 29 ofthe inner container in the region of the central region 17 and of thebase region and a fourth thickness 30 of the outer container 2 in theregion of the central region 17 and of the base region 18 beingconstant, it being advantageous for the third thickness 29 to be lessthan the fourth thickness 30. Also advantageously, the second thickness27 corresponds to the fourth thickness 30, meaning that the outercontainer 2 has a wall thickness that is constant throughout. Bycontrast, it is advantageous if the first thickness 26 is greater thanthe third thickness 29, in other words for the inner container 3 to beformed thinner-walled in the central region 17 and in the base region 18than in the outlet region 6. As a result, the inner container 3 cancontract and deform much more easily when fluid is withdrawn.

Also advantageously, the thickness of the inner container 3 varies asfollows. In the first outlet region 6 a first thickness 26 is provided,whilst in the central region 17 and in the base region 18 a thirdthickness 28 is provided. At the transition 19 between the outlet region6 and the central region 17, the inner container 3 is formed in such away that the thickness of the inner container 3 decreases to the thirdthickness 28. In particular, the thickness transition is formedcontinuously, in other words without abrupt jumps in thickness.

Particularly advantageously, the outlet direction 8 also corresponds toa central axis M of the first or second outlet region 6, 7, the outletregions 6, 7 being formed substantially cylindrical, having a firstinternal radius 31 and a second internal radius 32. It is furtherpreferred for the pressure compensation opening 4 to be arranged withina region having a first distance 33 as a radius about the central axisM, the first distance being arranged between the central axis M and thefarthest point, as seen perpendicular to the central axis M, of thethird projection 13.

Moreover, the second projection 10 and the third projection 13 each havea first portion 34, 35, which is at an angle to the central axis M incross section, the angle being in a range of 30° to 60°, more preferablyin a range of 40° to 50°, and preferably being 45°. Also preferably, thesecond projection 10 and the third projection 13 may each have a secondportion 36, 37 which extends substantially perpendicular to the centralaxis M in cross section.

FIG. 3A and the detail of FIG. 3A shown in FIG. 3B again show thedispenser container in an unshifted state, meaning that the first outletregion 6 is unshifted with respect to the second outlet region 7.

As can be seen from FIGS. 3A and 3B, in this context the secondprojection 10, as seen in the outlet direction 8, is arranged at a firstspacing 11 from the second outlet region 7 of the outer container 2. Thearrow 38 specifies a shift direction 38 in which the first outlet region6 is shiftable. In this context, the first projection is connected tothe pressure compensation opening 4 in such a way that the pressurecompensation opening 4 is sealed.

FIG. 4A and the detail of FIG. 4A shown in FIG. 4B show the dispensercontainer 1 in a shifted state, meaning that the first outlet region 6is or has been shifted with respect to the second outlet region 7.

A shift of the first outlet region 6 was brought about by an action offorce 39 on the first outlet region 6 along the shift direction 38.

The first outlet region 6 is pushed along the shift direction 38 or thecentral axis M into the interior of the dispenser container 1, the firstspacing 11 being reduced to a second spacing 12.

In the shifted state, as can be seen in particular from FIG. 4B, as aresult of the shift of the first outlet region 6 with respect to thesecond outlet region 7 the first projection 9 has likewise been shifted,in such a way that it now no longer seals the pressure compensationopening 4, making pressure compensation possible. Moreover, as a resultof the shift the inner container 3 has deformed, and this has caused aregion 25 to form between the inner container 3 and the outer container2.

If in the shifted state fluid is now withdrawn from the dispensercontainer 1, the resulting negative pressure is compensated through thepressure compensation opening 4, since as a result external air can flowinto the dispenser container 1.

As a result of the deformation of the inner container 3 due to the shiftof the first outlet region 6 relative to the second outlet region 7, aregion 25 has been formed between the inner container 3 and the outercontainer 2, and is in contact with the environment via the pressurecompensation opening 4, since likewise as a result of the shift of thefirst outlet region 6 the first projection 9 no longer seals thepressure compensation opening 4.

FIGS. 5A and 5B are each a cross section of a dispenser container 1comprising a pump device 14, the pump device 14 not yet being connectedto the dispenser container 1 in FIG. 5A and the pump device 14 beingconnected to the dispenser container 1 in FIG. 5B. Preferably, the pumpdevice 14 has a pump 40, and also preferably a cap 41, which isconnected to the pump 40 in such a way that the pump is protected fromthe environment.

Advantageously, the pump device 14 has a first receiving region 44 and asecond receiving region 45, the first receiving region 44 extending inthe direction of the central axis M or the outlet direction 8 over afirst length 42, and the second receiving region 45 extending in thedirection of the central axis M or the outlet direction 8 over a secondlength 43. The lengths 42, 43 are each as seen from a lower end 46 ofthe pump device 14 in the same direction.

Also preferably, the receiving regions 44, 45 are formed in such a waythat the second outlet region 7 can be received by the first receivingregion 44 and the first outlet region 6 can be received by the secondreceiving region 45.

Preferably, the first outlet region 6 extends further in the outletdirection 8 than the second length 43 of the second receiving region 45,the first outlet region 6 subsequently being shifted with respect to thesecond outlet region 7 as a result when the pump device 14 is fitted.

Further, the pump device 14 advantageously has a fourth projection 16,which can be brought into contact with the third projection 13 and thuslocks the pump device 14 with respect to the dispenser container 1.

FIG. 5B shows the elements of FIG. 5A, but with the pump arrangement 14fitted onto the dispenser container 1. As can be seen, fitting the pumpdevice 14 on the dispenser container 1 has caused a shift of the firstoutlet region 6 relative to the second outlet region 7, and as a resultthe first projection 9 no longer seals the pressure compensation opening4 and the region 25 has formed.

It can further be seen that the third projection 13 is now in contactwith the fourth projection 16 so as to lock the pump device 14 withrespect to the dispenser container 1.

It can be seen here that the pressure compensation opening 4 is arrangedwithin a region having the first distance 33 as a radius about thecentral axis M, the first distance being arranged between the centralaxis M and the farthest point, as seen perpendicular to the central axisM, of the third projection 13. This first distance 33 likewisecorresponds to a maximum internal radius of the pump device 14. Further,as a result of the fitting the lower end 46 of the pump device 14 is nowin non-tight contact with the outer container 2, meaning that air canstill flow through from the environment. This further means that thepressure compensation opening 4 is protected from the environment by thepump device 14, meaning that no foreign particles can arrive in thedispenser container 1 through the pressure compensation opening 4 andsaid container is protected from damage.

FIG. 6 shows a first part of a multi-component injection-moulding device104 for injecting on a preform 101 consisting of at least two layers102, 103, the plastic of the first layer 103 not forming an integralconnection with the plastic of the second layer 102 and the plastic ofthe first layer 103 having a higher elasticity than the plastic of thesecond layer 102. The device comprises an injection blow-moulding core106, which is located in a first cavity 105. A first layer 103 isinjected into this first cavity 105 by a feed means 114. In thiscontext, the cavity 105 has a first projection-forming portion 105′,which forms the first projection 9 of the dispenser container 1.

FIG. 7 shows a second cavity 107 of the multi-componentinjection-moulding device 104. The injection blow-moulding core 106having the first layer 103 already injected on is located in this secondcavity. Further, a slider core 108 comprising a projection 109 can beintroduced into the second cavity 107, in such a way that the projection109 touches the first layer 103, specifically where the first projection9 is to be formed. When the second plastic is injected into the secondcavity 107 by a further feed means 114 a, the projection of the slidercore recesses a region 110 formed by the pressure compensation opening4. The invention is not limited to the arrangement points shown in FIGS.6 and 7 of the feed means 114, 114 a on the respective cavities 105,107.

FIG. 8 schematically shows the device 100 for manufacturing a dispensercontainer 1, consisting of an outer container 2 and an inner container 3for receiving a fluid in injection blow-moulding for injection-mouldinga preform 101 and for stretch-blowing the preform 101 within the samedevice 100. As well as the multi-component injection-moulding device 104described previously in FIGS. 6 and 7, the device 100 further has astretch-blowing means 111 for stretch-blowing the preform 101, which isheated by an injection-moulding process and is at a working temperaturerequired for the stretch-blowing. Further, a cooling means 112 forcooling the expanded dispenser container 1 and a withdrawal means 113for removing the finished dispenser container 1 from the device 100 arepresent.

All features disclosed in the application documents are claimed asessential to the invention as long as they are novel individually or incombination in respect of the prior art.

LIST OF REFERENCE NUMERALS

-   1 Dispenser container-   2 Outer container-   3 Inner container-   4 Pressure compensation opening-   5 Region-   6 First outlet region-   7 Second outlet region-   8 Outlet direction-   9 First projection-   10 Second projection-   11 First spacing-   12 Second spacing-   13 Third projection-   14 Pump device-   15 Holding device-   16 Fourth projection-   17 Central region-   18 Base region-   19 First transition region-   20 Second transition region-   21 Outer face of inner container-   22 Inner face of inner container-   23 Outer face of outer container-   24 Inner face of outer container-   25 Region-   26 First thickness-   27 Second thickness-   28 Outlet region-   29 Third thickness-   30 Fourth thickness-   31 First internal radius-   32 Second internal radius-   33 First distance-   34 First portion-   35 First portion-   36 Second portion-   37 Second portion-   38 Shift direction-   39 Force-   40 Pump-   41 Cap-   42 First length-   43 Second length-   44 First receiving region-   45 Second receiving region-   46 Lower end-   100 Device-   101 Preform-   102 Second layer-   103 First layer-   104 Injection-moulding device-   105 First cavity-   105′ Projection-forming region-   106 Injection blow-moulding core-   107 Second cavity-   108 Slider core-   109 Projection on the slider core-   110 Recessed region in the second layer-   111 Stretch-blowing means-   112 Cooling device-   113 Withdrawal device

The invention claimed is:
 1. A dispenser container comprising an outercontainer and an inner container for receiving a fluid; wherein theouter container and the inner container are formed from blow-mouldedplastics, which do not form an integral connection with one another, anda first plastic from which the inner container is formed has a higherelasticity than a second plastic from which the outer container isformed, such that the inner container is deformable, and wherein theouter container has at least one pressure compensation opening forpressure compensation in a region between the outer container and theinner container; wherein the inner container has a first outlet regionand the outer container has a second outlet region, and wherein thefirst outlet region is able to be shifted relative to the second outletregion in an outlet direction; the inner container comprises, on anouter face, at least one complementary first projection for sealing thepressure compensation opening, said projection projecting into thepressure compensation opening and being non-positively connected to thepressure compensation opening before a shift of the first outlet regionrelative to the second outlet region, and the first projection beingreleased from the pressure compensation opening after the shift of thefirst outlet region; and wherein the first outlet region comprises asecond projection, which extends substantially perpendicular to theoutlet direction and, in the outlet direction, is at a first spacingfrom a top surface of the second outlet region before the shift of thefirst outlet region relative to the second outlet region and at a secondspacing from the top surface of the second outlet region after theshift, the second spacing being less than the first spacing.
 2. Thedispenser container according to claim 1, wherein the first outletregion extends further in the outlet direction than the second outletregion, at least in part.
 3. The dispenser container according to claim1, wherein the pressure compensation opening is arranged on the secondoutlet region.
 4. The dispenser container according to claim 1, whereinthe first spacing is in a range of 1 10 mm.
 5. The dispenser containeraccording to claim 1, wherein the second outlet region comprises a thirdprojection, which extends substantially perpendicular to the outletdirection.
 6. An assembly comprising the dispenser container accordingto claim 1 and a pump device for fitting on the dispenser container,wherein the pump device is formed in such a way that the first outletregion is shifted relative to the second outlet region while the pumpdevice is being fitted on the dispenser container.
 7. The assemblyaccording to claim 6, wherein a holding device is provided with a fourthprojection, which, after the fitting, is connected to the thirdprojection by means of at least one selected from the group of snap-on,crimp and screw connections.
 8. A device for manufacturing a dispensercontainer according to claim 1, comprising an outer container and aninner container for receiving a fluid, using a blow-moulding method forinjection-moulding a preform and for stretch-blowing the preform withinthe same device, the device comprising: a. a multi-componentinjection-moulding means for injecting on the preform which comprises atleast two layers, wherein plastic of a first layer does not form anintegral connection with the plastic of a second layer and the plasticof the first layer having a higher elasticity than the plastic of thesecond layer; b. an injection blow-moulding core, to which the layerswhich form the preform are applied; c. a first cavity for forming thefirst layer; d. a second cavity for forming a second layer, into which aslider core can be introduced; e. a slider core comprising at least oneslider projection, which projects into the second cavity, the at leastone slider projection, located in the second cavity, of the slider corerecessing at least one region in the second layer, which region forms atleast one pressure compensation opening in the outer container; f. astretch-blowing means for stretch-blowing the preform, which is heatedby an injection-moulding process and is at a working temperaturerequired for the stretch-blowing, to form the dispenser container;wherein the first cavity and the second cavity are formed in such a waythat after the stretch-blowing it is possible to shift the first outletregion relative to the second outlet region and the first outlet regionof the dispenser container comprises the second projection, whichextends substantially perpendicular to an outlet direction; wherein thefirst cavity comprises an enlargement region for forming a firstprojection, the slider core projecting into the second cavity at theenlargement region, being in contact with said region, and being formedso as to form the pressure compensation opening; and wherein the firstcavity comprises a second enlargement region for forming the secondprojection.